Back to EveryPatent.com
United States Patent | 5,727,803 |
Johnson | March 17, 1998 |
An adaptor for a three point hitch of a tractor allows the adaptor to attach to the hitch bar of a trailer without the necessity of vertical or horizontal adjustment of the position of the tractor relative to the trailer. The adaptor comprises a vertical post having an upper end attached to a centre arm of the three point hitch. A pair of side arms of the adaptor attached to the lower arms of the three point hitch. A J-shaped hook member has a longer leg projecting through a slot in the post and a shorter leg which abuts against a rear face of the post in the hitching position. The hook engages around a loop attached to the trailer. A cylinder coupled to a forward end of the longer leg can actuate pivotal movement of the hook about a pin attached across the post to move the hook from the hitching position to a release position.
Inventors: | Johnson; Alan (HCR 77 Box 17, Trail City, SD 57657) |
Appl. No.: | 641055 |
Filed: | April 29, 1996 |
Current U.S. Class: | 280/416.2 |
Intern'l Class: | B60D 001/26 |
Field of Search: | 280/416.1,416.2,416.3,4.9,433,441,442,453,478.1,508,510,460.1,415.1,515 |
4431207 | Feb., 1984 | Lagenfeld et al. | 280/415. |
4773666 | Sep., 1988 | Koberlein et al. | 280/460. |
4850789 | Jul., 1989 | Zimmerman | 280/416. |
5169279 | Dec., 1992 | Zimmerman | 280/416. |
5211416 | May., 1993 | Blacklaw | 280/416. |
5261687 | Nov., 1993 | Bergman | 280/478. |